CN205209443U - Electricity drives three -dimensional flame shape measurement system in sliced optics engine of laser - Google Patents
Electricity drives three -dimensional flame shape measurement system in sliced optics engine of laser Download PDFInfo
- Publication number
- CN205209443U CN205209443U CN201520912500.2U CN201520912500U CN205209443U CN 205209443 U CN205209443 U CN 205209443U CN 201520912500 U CN201520912500 U CN 201520912500U CN 205209443 U CN205209443 U CN 205209443U
- Authority
- CN
- China
- Prior art keywords
- laser
- high speed
- speed camera
- sheet
- dimensional
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to an electricity drives three -dimensional flame shape measurement system in sliced optics engine of laser, including high -speed laser, piece light generation module, refractor, high -speed linear electric motor, high speed camera, the laser beam of high -speed laser transmission pass piece light generation module, a piece light generation module constitute the light path by concave mirror, concave and convex lenses and cylinder type concave mirror, the light that passes behind the piece light generation module reflects the back through gathering with the perpendicular high speed camera who arranges of light beam through refractor 90, the refractor be connected with high -speed linear electric motor, piece light generation module and high speed camera one -tenth parallel arrangement. The beneficial effects of the utility model are that the three -dimensional of flame is measured in can realizing the optics engine effectively. Compare simultaneously in current two -dimensional laser section measuring technique, a high -speed linear electric motor has only been added to this method on physics hardware, consequently realize that the cost is lower.
Description
Technical field
The utility model relates to measurement mechanism, is specifically related to three-dimensional flame profile measuring system in optical engine that a kind of electricity drives laser dicing.
Background technology
Along with the development of direct injection technology in engine cylinder, particularly for the exploitation of spray-guided formula stratified combustion, need to understand detailed flame development process.Flame transmission is carried out in non-homogeneous fuel field and airflow field in cylinder, and its velocity of propagation has larger each to otherness, result in flame and has complicated geometric configuration.
Measure for the flame profile in optical engine at present, main employing method for laser dicing, its principle utilizes Mie scattering effect, make the finely ground particles (such as olive oil particle) be filled with in advance in cylinder, under superlaser irradiates, produce scattering effect, and by these luminance signals under camera record.The finely ground particles of flame front through place can be consumed in flame propagation process, cause producing luminance signal, therefore by processing recorded picture, clearly can tell the flame burned region territory of black and shinny possible trouble region, and namely its intersection is the contour structures of flame.Because the method adopts single shape laser beam to measure, therefore the measurement to flame a certain fixed position cross sectional shape can only be completed, belong to bidimensional measuring method, the real three-dimensional structure of flame cannot be reflected, the development of engine chamber may be misled.And existing holographic imaging technology, usually need to adopt multiple stage camera synchronization to measure, except cost intensive, due to the structural limitations of optical engine, enough optical visible regions cannot be provided, be difficult to the flame structure be applied in optical engine and measure.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of system realizing carrying out flame profile three-dimensional measurement.
For reaching above-mentioned utility model object, three-dimensional flame profile measuring system in the optical engine providing a kind of electricity to drive laser dicing, comprises high-speed laser, sheet photogenerated module, refracting telescope, high-speed LEM, high speed camera; Along Laser emission direction setting gradually sheet high-speed laser, sheet photogenerated module and refracting telescope, sheet photogenerated module forms light path by concave mirror, concave and convex lenses and column type concave mirror; The upright position in laser refraction direction is provided with high speed camera, and sheet photogenerated module becomes to be arranged in parallel with high speed camera; Described refracting telescope is connected with high-speed LEM.
Preferably, the optical engine with transparent cylinder sleeve structure is placed between described high speed camera and refracting telescope.
Preferably, the signal synchronizer for synchronous laser emission frequency, linear electric motors movement position and high speed camera shutter is also comprised.
Preferably, the information that described high speed camera collects is sent to the computing machine with post-processing algorithm.
The utility model adopts linear motor direct drive two-dimensional sheet light source refractor, thus after making the light launched in generating laser inject refractor, refracting telescope is changed by motor the position that sheet light injects flame at short notice fast, realize the multiple flame cross section of laminated record, and utilize post-processing algorithm, reconstruct the three-dimensional structure profile of whole flame.This system only needs single high speed camera, and camera position immobilizes, and test layout is simple, is particularly suitable for the measurement of three-dimensional flame structure in optical engine, and is used to guide the development of engine chamber.
The beneficial effects of the utility model are the three-dimensional measurements that effectively can realize optical engine flame.Simultaneously compared to existing two-dimensional laser section measuring technique, the method only with the addition of a high-speed LEM on physical hardware, therefore realizes cost lower.Three-dimensional flame profile complicated in cylinder and evolution thereof can be obtained fast by software data correction, and then measure flame propagation velocity accurately, for the exploitation of novel firing chamber provides reliable Data support.Correlation calculations is carried out to the trace particle in two dimensional image simultaneously, the flow field velocity information in each two-dimensional section can also be obtained.The three-dimensional geometry profile that the method can also be applied to spray process is measured, and is generalized to the flame three-dimensional measurement of other types burner.
Accompanying drawing explanation
Fig. 1 is the overall schematic of the utility model measuring system;
Fig. 2 is the side view of sheet photogenerated module in the utility model;
Fig. 3 is the vertical view of sheet photogenerated module in the utility model;
Fig. 4 is the vertical view of the utility model measuring system;
Wherein:
1-high-speed laser 2-sheet photogenerated module 21-column type concave mirror
22-concave and convex lenses 23-concave mirror 3-refracting telescope
4-high-speed LEM 5-high speed camera 6-computing machine
7-signal synchronizer 8-optical engine 9-flame
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Three-dimensional flame profile measuring system in the optical engine driving laser dicing according to a kind of electricity shown in Fig. 1 to Fig. 4, comprises high-speed laser 1, sheet photogenerated module 2, refracting telescope 3, high-speed LEM 4, high speed camera 5 and signal synchronizer 8.The laser beam that described high-speed laser 1 is launched is through sheet photogenerated module 2, and described sheet photogenerated module 2 forms light path by concave mirror 23, concave and convex lenses 22 and column type concave mirror 21; Through the light after sheet photogenerated module 2 by after refracting telescope 90 ° refraction, enter in the optical engine 8 with transparent cylinder sleeve structure placed between high speed camera 5 and refracting telescope 3, then gathered by high speed camera 5.Described refracting telescope 3 is connected with high-speed LEM 4, and described sheet photogenerated module 2 is arranged in parallel with high speed camera 5 one-tenth, and high speed camera 5 is vertical with the light after refraction.Fig. 1 is only signal, and concrete arrangement is shown in Fig. 4.Signal synchronizer 7 is for synchronous laser emission frequency, linear electric motors movement position and high speed camera shutter frequency.The information that high speed camera 5 collects be sent to there is post-processing algorithm computing machine 6 in process.
The course of work of whole system is as follows: fixing high-speed laser 1, can select Nd:Yag laser instrument, the single-point laser bundle of transmitting enters sheet light source generation module 2.In sheet photogenerated module 2, the light path be made up of concave mirror 23, concave and convex lenses 22 and cylindrical concave mirror 21 by, being realized light overlooking the focusing in face, regulating the position of concave and convex lenses 22 to realize focus adjustment simultaneously.Facing in face, utilize cylindrical concave mirror 21 that laser beam is expanded into sheet laser.
The core innovative point of this invention has been loaded on high-speed LEM 4 by plane refraction mirror 3, refracting telescope 3 is by after the light refraction 90 degree of sheet photogenerated module 2, inject and have in the optical engine 8 of transparent cylinder sleeve structure, because refracting telescope 3 inertial mass is very little, be conducive to stable high speed position motion control, the fast and parallel displacement of sheet LASER Light Source can be realized, thus at short notice laser dicing is carried out to the diverse location of flame.
When laser sheet optical is running into finely ground particles in cylinder, be such as to reflect during olive oil particle, luminescence is put bright, and there is not finely ground particles in flame burned region inside, therefore becomes furvous.These light signals carry out record by high speed camera 5.In measuring process, adopt the synchronous laser emission frequency of signal synchronizer 8, the switch of linear electric motors movement position and camera shutter, continuous print records the two-dimensional shapes in diverse location flame cross section.
In post-processing algorithm, first binary conversion treatment is carried out to the picture often opening record, extract flame edge.Each cross section due to flame is not record at one time, therefore needs to revise.Due to the speed of motor removing, can suppose that flame only moves in the orthogonal directions constant speed of moving surface at short notice, therefore the speed of orthogonal directions can be multiplied by by the time interval of section gauge, calculate at the amount of movement of flame on this side up border, and carry out corrected Calculation, make the two-dimentional flame edge in each cross section be adapted to synchronization.Utilize the spacing between known each measurement cross section, utilize tri patch method to realize the three-dimensionalreconstruction of flame.
Below the preferred embodiment that the utility model is created is illustrated, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art can also make all equivalent modification or replacement under the prerequisite without prejudice to the utility model creative spirit, and these equivalent modifications or replacement are all included in the application's claim limited range.
Claims (4)
1. electricity drive laser dicing optical engine in a three-dimensional flame profile measuring system, it is characterized in that, comprise high-speed laser, sheet photogenerated module, refracting telescope, high-speed LEM, high speed camera;
Along Laser emission direction setting gradually sheet high-speed laser, sheet photogenerated module and refracting telescope, sheet photogenerated module forms light path by concave mirror, concave and convex lenses and column type concave mirror;
The upright position in laser refraction direction is provided with high speed camera, and sheet photogenerated module becomes to be arranged in parallel with high speed camera;
Described refracting telescope is connected with high-speed LEM.
2. electricity according to claim 1 drive laser dicing optical engine in three-dimensional flame profile measuring system, it is characterized in that, between described high speed camera and refracting telescope, place the optical engine with transparent cylinder sleeve structure.
3. electricity according to claim 1 drive laser dicing optical engine in three-dimensional flame profile measuring system, it is characterized in that, also comprise the signal synchronizer for synchronous laser emission frequency, linear electric motors movement position and high speed camera shutter.
4. three-dimensional flame profile measuring system in the optical engine driving laser dicing according to the arbitrary described electricity of claims 1 to 3, it is characterized in that, the information that described high speed camera collects is sent to the computing machine with post-processing algorithm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912500.2U CN205209443U (en) | 2015-11-16 | 2015-11-16 | Electricity drives three -dimensional flame shape measurement system in sliced optics engine of laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912500.2U CN205209443U (en) | 2015-11-16 | 2015-11-16 | Electricity drives three -dimensional flame shape measurement system in sliced optics engine of laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205209443U true CN205209443U (en) | 2016-05-04 |
Family
ID=55847153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520912500.2U Expired - Fee Related CN205209443U (en) | 2015-11-16 | 2015-11-16 | Electricity drives three -dimensional flame shape measurement system in sliced optics engine of laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205209443U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726691A (en) * | 2019-10-11 | 2020-01-24 | 中国航发沈阳发动机研究所 | Method and system for measuring two-dimensional distribution of carbon dioxide concentration |
| CN111288909A (en) * | 2020-03-25 | 2020-06-16 | 日立电梯电机（广州）有限公司 | Roundness detection device and method |
-
2015
- 2015-11-16 CN CN201520912500.2U patent/CN205209443U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726691A (en) * | 2019-10-11 | 2020-01-24 | 中国航发沈阳发动机研究所 | Method and system for measuring two-dimensional distribution of carbon dioxide concentration |
| CN111288909A (en) * | 2020-03-25 | 2020-06-16 | 日立电梯电机（广州）有限公司 | Roundness detection device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101957183B (en) | Structured light projection-based high-speed three-dimensional measurement system | |
| IL274894B1 (en) | Optical device alignment methods | |
| CN207181840U (en) | A kind of Spatial Imaging System | |
| CN107272018A (en) | A kind of 3-D scanning Full-waveform laser radar system | |
| CN102175178A (en) | System and method for measuring diffusion flame frontal surface three-dimensional structure of motion fire source | |
| CN102735431B (en) | Method for measuring sight line stabilizing accuracy of photoelectric sight-stabilizing system | |
| CN102980600A (en) | Optical system based on double-pulse digital speckle transient measurement | |
| CN102360079A (en) | Laser range finder and working method thereof | |
| CN205209443U (en) | Electricity drives three -dimensional flame shape measurement system in sliced optics engine of laser | |
| CN103308715A (en) | Low power consumption particle picture velocity measurement system based on bicolor laser scanning technique | |
| CN106443691A (en) | Three-dimensional imaging system based on digital micromirror device (DMD) and imaging method | |
| CN113074946B (en) | Three-dimensional cross-interface measurement system | |
| CN102865833B (en) | Three-dimensional imaging device and method based on contour information sparse measurement | |
| CN104197865B (en) | Implementation method of laser auto-collimator with laser beam guide function | |
| CN102564343A (en) | Detection device for surface-shape errors of solar trench type curved surface reflector | |
| CN110207801B (en) | Detonation wave three-dimensional structure reconstruction system based on shadow technology | |
| Zhao et al. | Three-dimensional imaging interferometric synthetic aperture ladar | |
| CN203042217U (en) | Vein seeking device | |
| CN205091114U (en) | Focus measuring device of lens device | |
| CN104132676B (en) | A kind of coaxial framing high speed imaging based on double; two FP chambeies and interferometric method | |
| CN103340606A (en) | Light switching human body three-dimensional scanning systems | |
| CN205718875U (en) | A kind of scan-type structure light projection system | |
| CN201993091U (en) | Measuring system for three-dimensional structure of diffusion flame frontal area of movement fire source | |
| CN202256377U (en) | Single-camera three-dimensional stereo particle picture speed measuring system | |
| CN2904001Y (en) | Composite laser landing navigation equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20211116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |